EIP-7688: Forward Compatible Consensus Data Structures by macladson · Pull Request #9450 · sigp/lighthouse

macladson · 2026-06-10T17:40:25Z

Relevant Links

Proposed Changes

Adds the necessary types and components to support EIP-7688, along with the cargo patches to pull in the progressive versions of the crates in our SSZ stack.

Testing

participants_matrix:
  el:
    - el_type: nethermind
      el_image: ethpandaops/nethermind:master
  cl:
    - cl_type: nimbus
      cl_image: ethpandaops/nimbus-eth2:glamsterdam-devnet-7-minimal
    - cl_type: lodestar
      cl_image: ethpandaops/lodestar:glamsterdam-devnet-7
    - cl_type: lighthouse
      cl_image: ethpandaops/lighthouse:glamsterdam-devnet-7
    - cl_type: teku
      cl_image: ethpandaops/teku:glamsterdam-devnet-7

ethereum_genesis_generator_params:
  image: "ethpandaops/ethereum-genesis-generator:glamsterdam-devnet-7"
dora_params:
  image: ethpandaops/dora:glamsterdam-devnet-7

global_log_level: debug

network_params:
  preset: minimal
  gloas_fork_epoch: 1

additional_services:
  - dora

Additional Info

Based on the original work by @michaelsproul in #8505

…tests

eserilev · 2026-07-08T09:40:24Z

5436 was also added as part of the alpha spec 12 changes

eserilev

Finished my review, outside of my nits i think this should be g2g. imo I think we should get this into unstable asap as its blocking alpha spec 12 and 13

mergify · 2026-08-03T17:51:28Z

Some required checks have failed. Could you please take a look @macladson? 🙏

macladson · 2026-08-03T19:10:18Z

For the other Claude findings I have addressed 3 and 5, but left 1, 2 and 4 (size-bounds and limits) for a follow-up PR.

eserilev

LGTM!

mergify · 2026-08-04T06:19:04Z

Merge Queue Status

✅ Entered queue — 2026-08-04 06:18 UTC · Rule: default · triggered by rule Add ready-to-merge labeled PRs to merge queue
✅ Checks passed · on draft merge queue: checking unstable (dbd2824) and #9450 together #9746
✅ Merged — 2026-08-04 06:48 UTC · at 615dab80ec96d42c0f268db78dcd2eed138c0b96 · squash

This pull request spent 29 minutes 35 seconds in the queue, including 27 minutes 39 seconds running CI.

Required conditions to merge

check-success=local-testnet-success
check-success=test-suite-success
github-review-approved [🛡 GitHub branch protection]
- EIP-7688: Forward Compatible Consensus Data Structures #9450

## Issue Addressed Follow-up to #9708 , resolving the outstanding switch of `InclusionList.transactions` to `ProgressiveTransactions`. This was unblocked by the merge of #9450. ## Proposed Changes - Switch `InclusionList.transactions` from `Transactions<E>` to `ProgressiveTransactions`, matching [the spec type](https://github.com/ethereum/consensus-specs/blob/master/specs/heze/beacon-chain.md#inclusionlist) - Since no field depends on `EthSpec` anymore, `InclusionList` and `SignedInclusionList` drop this type parameter

michaelsproul and others added 20 commits December 1, 2025 12:23

EIP-7916: ProgressiveList and tests

86f8c2e

Merge remote-tracking branch 'origin/unstable' into progressive-list-…

d7ebdeb

…tests

Test runners for basic progressive containers and bitlists

9e15231

Rest of the progressive container tests

fffd203

Remove path patches

30289cd

Compatible union tests

6b5d878

Passing on v1.7.1-alpha.1

9aad3c6

Merge remote-tracking branch 'origin/unstable' into progressive-list-…

e98b6db

…tests

Remove selector attribute duplication! Yay!

ecd207f

Fix Bitfield type inference

be9d697

Merge branch 'unstable' into progressive-list-tests

e9d53ea

Enable all ssz tests

827ff95

Merge branch 'unstable' into progressive-list-tests

72723b2

Merge branch 'unstable' into progressive-list-tests

0d64c6f

Merge branch 'unstable' into eip-7688

1340bf3

Forwards compatible consensus data structures

448ebda

Merge branch 'unstable' into eip-7688

187ea35

Tidy up

8bafb1d

Test cleanup

261ab4c

Remove unnecessary Box

ff71771

macladson added blocked work-in-progress PR is a work-in-progress labels Jun 10, 2026

michaelsproul mentioned this pull request Jun 13, 2026

Progressive data structures and tests EIP-7916, EIP-8016 #8505

Closed

5 of 6 tasks

macladson added 6 commits July 2, 2026 03:08

Merge branch 'unstable' into eip-7688

4381922

tidy

ee451e7

Minimize diff

a2a8664

More cleanup

5954269

Merge branch 'unstable' into eip-7688

07c926a

Merge branch 'unstable' into eip-7688

a01b312

eserilev reviewed Aug 3, 2026

View reviewed changes

Comment thread beacon_node/http_api/src/beacon/pool.rs Outdated

eserilev reviewed Aug 3, 2026

View reviewed changes

Comment thread beacon_node/http_api/src/validator/mod.rs Outdated

macladson added 3 commits August 4, 2026 02:49

Address comments

9214fd6

Merge branch 'unstable' into eip-7688

7b728d5

Pin patches to specific git commits

d6f99dc

macladson added ready-for-review The code is ready for review and removed blocked waiting-on-author The reviewer has suggested changes and awaits thier implementation. labels Aug 3, 2026

mergify Bot added waiting-on-author The reviewer has suggested changes and awaits thier implementation. and removed ready-for-review The code is ready for review labels Aug 3, 2026

macladson added 2 commits August 4, 2026 03:58

Fix lockfile

ac0673b

Bump genesis-genesis-generator

615dab8

macladson added ready-for-review The code is ready for review and removed waiting-on-author The reviewer has suggested changes and awaits thier implementation. labels Aug 3, 2026

eserilev approved these changes Aug 4, 2026

View reviewed changes

eserilev added ready-for-merge This PR is ready to merge. and removed ready-for-review The code is ready for review labels Aug 4, 2026

mergify Bot added the queued label Aug 4, 2026

mergify Bot mentioned this pull request Aug 4, 2026

merge queue: checking unstable (dbd2824) and #9450 together #9746

Closed

8 tasks done

mergify Bot merged commit e58ec88 into sigp:unstable Aug 4, 2026
38 checks passed

mergify Bot removed the queued label Aug 4, 2026

macladson deleted the eip-7688 branch August 4, 2026 08:24

conache mentioned this pull request Aug 4, 2026

Use ProgressiveTransactions type for the IL transactions field #9747

Merged

macladson mentioned this pull request Aug 4, 2026

Gloas alpha spec 12 changes #9596

Merged

shane-moore mentioned this pull request Aug 4, 2026

chore(deps): bump Lighthouse to unstable HEAD e58ec88fe and migrate sign_attestations to SingleAttestation sigp/anchor#1215

Merged

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EIP-7688: Forward Compatible Consensus Data Structures - #9450

EIP-7688: Forward Compatible Consensus Data Structures#9450
mergify[bot] merged 40 commits into
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